Disable SElinux on CentOS7 jobs
Disable SElinux on CentOS7 jobs

python-cffi is preventing Nova & Keystone to run when SElinux is
enforced.
The bug is reported [1] and RDO team is working on it.
In the meantime, we need to disable SElinux so we can run our CI again.

This patch might be reverted once a fix is released in packaging.

[1] https://bugzilla.redhat.com/show_bug.cgi?id=1249685

Change-Id: I4720ec701cb36f56a9556a124204db32fa8e8434

openstack/puppet-openstack-integration,openstack/puppet-openstack-integration,openstack/puppet-openstack-integration